Page 34 - Science Course 2 (Book 2)
P. 34
Mo8-L4b: What is the Law of Conservation of Momentum?
What is the Law of Conservation of Let’s Begin
Mo8-L4b Momentum?
When you puch against an object, the force you apply
KEY CONCEPTS: is called the action force.
1. What is the law of conservation of momentum? The force applied by the object back agianst you is
called the reaction force.
Vocabulary A-Z
Let us learn some vocabulary
momentum
a measure of how hard it is to stop a moving object.
A bus can have a large momentum even if its
moving very slowly, because it has a large mass. According to Newton’s third law of motion, every
action force has a reaction force in the opposite
direction.
law of conservation of momentum
a principal stating that the total momentum of a
group of objects stays the same unless outside
forces act on the objects. Momentum
Momentum is a measure of how hard it is to stop a
moving object.
Momentum is the product of an object’s mass and
velocity.
The collision transfers momentum from the f rst
ball to the second ball.
Smaller Mass Larger Mass
Smaller momentum Larger momentum
Two bodies moving with Velocity V
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